Papers, Symposia, Addresses, Reports: The Academy's Opportunities for Usefulness; Cultural Affinities and Differences in Illinois Archaeology; The Use of Animal Life by the Mound-building Indians of Illinois; Geology and the Indian Mounds;...

Papers, Addresses, Reports: Treasurer's Report; Resolutions Presented at the Harrisburg Meeting; The Making of Southern Illinois; Does Infant Welfare Work Operate to Preserve the Unfit?; The Origin of Man; Investigations of Agricultural Soils...

Papers, Addresses, Reports: On Popularizing Science; Geology of the Joliet District; The Genus Peperomia in Northeastern South America; The American Bithynia Not Wholly an Introduced Species; Growth of Diatoms in Relation to Dissolved Gases;...

Papers, Addresses, Reports: Recent Developments in the Chemistry of the Rare Earth Group (Address of the Retiring President); The Significance of the Conservation of Land Resources; Classification of Illinois Lands; Soil Erosion Control...

Papers, Addresses, Reports: Extract from the Report of the Secretary; Address of the Retiring President: Some Aspects of Human Society in the Light of Geologic Philosophy; Stream Pollution Problems; Extract from the Report of the Section...

Papers, Addresses, Reports: The Mucous Membrane of the Nose (Address of the Retiring President); The Endocrine Glands; Extract From the Report of the Secretary (Agriculture); Preliminary Studies in milk; Extract From the Report of the Section...

Papers, Addresses, Reports: Treasurer's Report; Resolutions Presented at the Elgin Meeting; Plant Communities of Glacier National Park, Montana; Mental Hygiene as a Problem of Public Health; The Year's Progress in Public Health and Medicine;...

Papers, Addresses, Reports: Research, Its Opportunities and Rewards; Chemical Messengers, A Special Consideration; Contributions of the Physical Sciences to Human Welfare; Extract from the Report of the Section Chairman (Botany); Frederick...

Papers, Addresses, Reports: Treasurer's Report; Resolutions Presented at the Springfield Meeting; Addresses of Welcome, Springfield Meeting; Science and the Treatment of Human Ailments; The Science of Public Health, Actual and Potential...